257942385

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 496454400

約数和(自身を除く): 238512015

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 101, 103, 145, 171, 261, 285, 303, 309, 435, 505, 515, 551, 855, 909, 927, 1305, 1515, 1545, 1653, 1919, 1957, 2755, 2929, 2987, 4545, 4635, 4959, 5757, 5871, 8265, 8787, 8961, 9595, 9785, 10403, 14645, 14935, 17271, 17613, 24795, 26361, 26883, 28785, 29355, 31209, 43935, 44805, 52015, 55651, 56753, 86355, 88065, 93627, 131805, 134415, 156045, 166953, 170259, 197657, 278255, 283765, 301687, 468135, 500859, 510777, 592971, 834765, 851295, 905061, 988285, 1508435, 1778913, 2504295, 2553885, 2715183, 2964855, 4525305, 5732053, 8894565, 13575915, 17196159, 28660265, 51588477, 85980795, 257942385]

約数ペア:

[(1, 257942385), (3, 85980795), (5, 51588477), (9, 28660265), (15, 17196159), (19, 13575915), (29, 8894565), (45, 5732053), (57, 4525305), (87, 2964855), (95, 2715183), (101, 2553885), (103, 2504295), (145, 1778913), (171, 1508435), (261, 988285), (285, 905061), (303, 851295), (309, 834765), (435, 592971), (505, 510777), (515, 500859), (551, 468135), (855, 301687), (909, 283765), (927, 278255), (1305, 197657), (1515, 170259), (1545, 166953), (1653, 156045), (1919, 134415), (1957, 131805), (2755, 93627), (2929, 88065), (2987, 86355), (4545, 56753), (4635, 55651), (4959, 52015), (5757, 44805), (5871, 43935), (8265, 31209), (8787, 29355), (8961, 28785), (9595, 26883), (9785, 26361), (10403, 24795), (14645, 17613), (14935, 17271)]